#include <iostream>
#include <string>
#include <cstdio>
#include <string.h>
#include <errno.h>
#include <cstdlib>
#include <unistd.h>


void fun()
{
	std::cout << "hello world" << std::endl;

	_exit(100);
	//return 100;
	//exit(100);
}

int main()
{
	fun();
	std::cout << "进程正常退出" << std::endl;
	return 10;
}

